Gertrude Grob-Prandl was an Austria

Austria

Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...

n Wagnerian

Richard Wagner

Wilhelm Richard Wagner was a German composer, conductor, theatre director, philosopher, music theorist, poet, essayist and writer primarily known for his operas...

 soprano.

Grob-Prandl was born in Vienna

Vienna

Vienna is the capital and largest city of the Republic of Austria and one of the nine states of Austria. Vienna is Austria's primary city, with a population of about 1.723 million , and is by far the largest city in Austria, as well as its cultural, economic, and political centre...

 and studied at the conservatory there. She originally intended to become a piano teacher but the professors at the conservatory began to notice the size of her voice and she was placed in a singing class. She made her debut at the Vienna Volksoper as Santuzza in Cavalleria rusticana

Cavalleria rusticana

Cavalleria rusticana is an opera in one act by Pietro Mascagni to an Italian libretto by Giovanni Targioni-Tozzetti and Guido Menasci, adapted from a play written by Giovanni Verga based on his short story. Considered one of the classic verismo operas, it premiered on May 17, 1890 at the Teatro...

. She graduated to heavier roles such as Isolde

Tristan und Isolde

Tristan und Isolde is an opera, or music drama, in three acts by Richard Wagner to a German libretto by the composer, based largely on the romance by Gottfried von Straßburg. It was composed between 1857 and 1859 and premiered in Munich on 10 June 1865 with Hans von Bülow conducting...

, Brunnhilde

Der Ring des Nibelungen

Der Ring des Nibelungen is a cycle of four epic operas by the German composer Richard Wagner . The works are based loosely on characters from the Norse sagas and the Nibelungenlied...

 and Turandot

Turandot

Turandot is an opera in three acts by Giacomo Puccini, set to a libretto in Italian by Giuseppe Adami and Renato Simoni.Though Puccini's first interest in the subject was based on his reading of Friedrich Schiller's adaptation of the play, his work is most nearly based on the earlier text Turandot...

. She retired in 1972.

Some of her colleagues considered her greater than the other great Wagnerian sopranos of her generation, Birgit Nilsson

Birgit Nilsson

right|thumb|Nilsson in 1948.Birgit Nilsson was a celebrated Swedish dramatic soprano who specialized in operatic and symphonic works...

, Kirsten Flagstad

Kirsten Flagstad

Kirsten Målfrid Flagstad was a Norwegian opera singer and a highly regarded Wagnerian soprano...

, and Astrid Varnay

Astrid Varnay

Ibolyka Astrid Maria Varnay was an American dramatic soprano of Hungarian heritage and Swedish birth, who did most of her work in the United States and Germany. She was one of the best-known Wagnerian heroic sopranos of her generation...

. Irmgard Seefried

Irmgard Seefried

Irmgard Seefried was a distinguished German soprano who sang opera and lieder.Maria Theresia Irmgard Seefried was born in Köngetried, near Mindelheim, Bavaria, Germany, the daughter of educated Austrian-born parents. She studied at Augsburg University before making her debut in Aachen as the...

 once remarked that the "walls shook" when Grob-Prandl sang Turandot. A popular anecdote states that she was once interrupted while performing as Turandot, by fire-fighters. People outside the theater had mistaken her for a fire-alarm siren.

Unlike many big Wagnerians, she was dexterous enough to sing Mozart

Wolfgang Amadeus Mozart

Wolfgang Amadeus Mozart , baptismal name Johannes Chrysostomus Wolfgangus Theophilus Mozart , was a prolific and influential composer of the Classical era. He composed over 600 works, many acknowledged as pinnacles of symphonic, concertante, chamber, piano, operatic, and choral music...

, and she was a supportive, unselfish ensemble-singer. Besides size, her voice had a distinctive burnished timbre and a tight, brisk, consistent vibrato.

Available recordings include Donna Anna in Don Giovanni

Don Giovanni

Don Giovanni is an opera in two acts with music by Wolfgang Amadeus Mozart and with an Italian libretto by Lorenzo Da Ponte. It was premiered by the Prague Italian opera at the Teatro di Praga on October 29, 1787...

, First Lady in The Magic Flute

The Magic Flute

The Magic Flute is an opera in two acts composed in 1791 by Wolfgang Amadeus Mozart to a German libretto by Emanuel Schikaneder. The work is in the form of a Singspiel, a popular form that included both singing and spoken dialogue....

, Brunhilde, Isolde, and if one searches hard, Elektra

Elektra (opera)

Elektra is a one-act opera by Richard Strauss, to a German-language libretto by Hugo von Hofmannsthal, which he adapted from his 1903 drama Elektra. The opera was the first of many collaborations between Strauss and Hofmannsthal...

, Turandot, and Elettra in Idomeneo

Idomeneo

Idomeneo, re di Creta ossia Ilia e Idamante is an Italian language opera by Wolfgang Amadeus Mozart. The libretto was adapted by Giambattista Varesco from a French text by Antoine Danchet, which had been set to music by André Campra as Idoménée in 1712...

. There is also an anthology of her solo work.

She died on 16 May 1995 in the city of her birth.